package com.dimbottom.controller.handler.advice;

import com.dimbottom.entity.rest.Code;
import com.dimbottom.entity.rest.Rest;
import org.springframework.core.MethodParameter;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;

@ControllerAdvice
public class ResponseStatusResetAdvice implements ResponseBodyAdvice<Object> {

    @Override
    public boolean supports(MethodParameter returnType, Class<? extends HttpMessageConverter<?>> converterType) {
        return true;
    }

    @Override
    public Object beforeBodyWrite(Object body, MethodParameter returnType, MediaType selectedContentType, Class<? extends HttpMessageConverter<?>> selectedConverterType, ServerHttpRequest request, ServerHttpResponse response) {
        if (body instanceof Rest) {
            Rest<?> data = (Rest<?>) body;
            int code = data.getCode();
            HttpStatus status = HttpStatus.resolve(code);
            if (status != null) {
                response.setStatusCode(status);
            }
            if (data.getErrors() == null &&
                    data.getData() == null &&
                    data.getMsg() == null) {
                data.setMsg(Code.getDefaultMessage(code));
            }
            return body;
        }
        return body;
    }
}
